Maybe that EMP will disable all the engineer buildings on the mid point for like 10-12 seconds? Or simply destroy them with a good chunk of damage (that can hurt everyone who's not inside the coil or out of the range... maybe insta-kill 125 HP units?

And how about a third exit for the spawn? A demo can easily respawnkill there.

And I don't get this place... Specially the health/ammo. They can be easily missed if you're in a rush. At least make the room a liiiiiiitle bit smaller and align the wall with the rest of the room?